Improved snap-hook



UNITED STATES PATENT OEEIGE.

JOSIAH LETOHWORTH, OF BUFFALO, NEW YORK, ASSIGNOR TO PRATT 8v iLETOHWORTH, OF SAME PLACE.

,IMPROVED SNAP-HOOK.

Specification forming part of Letters Patent No. 59,511, dated November6, 1866.

` in which- Figure I is a plan view. Fig. II is a longitudinal section.Fig. III is a /perspective of the casting before the spring is put in.

Letters of like name and kind refer to like parts in each of thefigures.

The nature of this invention consists in the combination of alongitudinal aperture or mortise in the middle portion of a snap-hook,with side lips below the mortise and near the loop, (or in lieu of theside lips a rivet,) as a means of fastening, supporting, and protectingthe Sprin g.

In the construction of this snap-hook I make a longitudinal aperture ormortise in the middle portion, (a little more than one-half of the4middle portion,) as represented at A, and then project a lip on eitherside just below the mortise, as shown at b.l The base end of the spring`c is put in between these lips, the body of the spring passing throughthe mortise and the tip thereof lapping onto the hook, as shown in thedrawings. The lips are then pressed down upon the base end of thespring, holding it securely, the body of the spring having free play inthe mortise in the direction it is required to work, while at the sametime it is prevented from alateral or edgewise move-A ment by thevertical sides of the mortise.

I have contemplated using a rivet, d, through the base end of the springand body of the device instead ofthe lips, in case itmay be preferred.Either mode will be sufficient to hold the spring securely in connectionwith thelongitudinal mortise, and the lips are formed in casting themetal. The spring is slightly tapering, and the mortise in its verticalsides corresponds therewith.

I am aware that the longitudinal mortise is a joint invention, and isthe subject-matter of an application for a patent made by E. B. Forbushand myself, and therefore I make no claim herein to that device.

I am also aware `that the lips and a rivet have been heretofore used asa means of fastening the base end of the spring; but I am not aware thatlips or a rivet have been before used in connection with a longitudinalmor tise, as herein described. Therefore,

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the longitudinal mortise vA with the lips b, madebelow the mortise, so

as to show a recess or depression, g, or with the rivet d, for thepurpose and substantially as' described.

' JosIAH LETcEwoETE.

Witnesses B. H. MUEHLE, CEAS. E. BACON.

